Patent attributes
The invention relates to a calibration method for a printer having a mechanism for advancing a medium in a direction of media advance comprising the following steps:a—providing a printhead, the printhead having a swath height in the direction of media advance;b—providing an estimate of either the swath height or the characteristic of the mechanism;c—printing a base pattern on a medium using the printhead;d—printing an overlay pattern on the medium using the printhead to form an interference pattern;e—advance the medium of a predetermined distance using the mechanism at a time between the printing of the base pattern and the printing of the overlay pattern;f—analyze an optical evaluation of the interference pattern;g—evaluate as either:i—the swath height if the characteristic of the mechanism is known or estimated; orii—the characteristic of the mechanism if the swath height is known or estimated.
